... ,80,100,150,200,300ConnectionFlangeMaterialCast steel, SSExecutive StandardRefer to CJ274-2008 «Town gas pressure regulators»Character1 Modular ... Other non-corrosive gasRequirementThe installation, operation and maintenance must comply with the relative standard and rules 2 Our products 2 ... 30 million. Currently, our products have being exported to North America, Southeast Asia, the Middle East and 10 ...